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    Device to permit offpump beating heart coronary bypass surgery
    1.
    发明授权
    Device to permit offpump beating heart coronary bypass surgery 有权
    允许偏心跳动心脏冠状动脉旁路手术的装置

    公开(公告)号：US06969349B1

    公开(公告)日：2005-11-29

    申请号：US10403193

    申请日：2003-03-31

    申请人： Paul A. Spence ,  Warren Williamson, IV

    发明人： Paul A. Spence ,  Warren Williamson, IV

    IPC分类号： A61B17/02 ,  A61B17/30

    CPC分类号： A61B17/02 ,  A61B17/0206 ,  A61B17/0218 ,  A61B2017/0243 ,  A61B2017/306 ,  A61B2017/308

    摘要： A heart retractor links lifting of the heart and regional immobilization which stops one part of the heart from moving to allow expeditious suturing while permitting other parts of the heart to continue to function whereby coronary surgery can be performed on a beating heart while maintaining cardiac output unabated and uninterrupted. Circumflex coronary artery surgery can be performed using the heart retractor of the present invention. The retractor includes a plurality of flexible arms and a plurality of rigid arms as well as a surgery target immobilizing element. One form of the retractor can be used in minimally invasive surgery, while other forms of the retractor can accommodate variations in heart size and paracardial spacing.

    摘要翻译： 心脏牵开器连接心脏的抬起和区域性固定，其阻止心脏的一部分移动以允许快速缝合，同时允许心脏的其他部分继续发挥作用，从而可以在跳动的心脏上进行冠状动脉手术，同时保持心输出量不减 并不间断。 可以使用本发明的心脏牵开器进行环形冠状动脉手术。 牵开器包括多个柔性臂和多个刚性臂以及手术目标固定元件。 牵开器的一种形式可用于微创手术，而其他形式的牵开器可以适应心脏尺寸和心包间隔的变化。

    Retracting tip trocar with plunger sensor
    2.
    发明授权
    Retracting tip trocar with plunger sensor 失效
    用柱塞传感器收回尖头套管针

    公开(公告)号：US5527335A

    公开(公告)日：1996-06-18

    申请号：US335597

    申请日：1994-11-08

    申请人： Lee R. Bolduc ,  Bryan E. Loomas ,  Scott H. Miller

    发明人： Lee R. Bolduc ,  Bryan E. Loomas ,  Scott H. Miller

    IPC分类号： A61B17/34

    CPC分类号： A61B17/3496

    摘要： A cannula is extended through the wall of a body cavity by a trocar having a piercing head slidable through the cannula between a condition extending distally from the cannula and a condition retracted within the cannula. A latch releasably secures the piercing head in the extended condition against the force of a spring which normally biases the piercing head to the retracted condition. Resiliently biased plungers extend longitudinally of the piercing head for retraction in response to counterforce as the piercing head advances through the wall of a body passage and extension upon the release of the counterforce. Extension of the plungers upon release of the counterforce functions to release the piercing head for retraction.

    摘要翻译： 套管通过套管针延伸穿过体腔的壁，套管针具有可从套管向远侧延伸的状态和在套管内缩回的状态在套管中滑动的穿刺头。 闩锁可释放地将穿刺头固定在延伸状态下，抵抗通常将穿刺头偏压到缩回状态的弹簧的力。 弹性偏置的柱塞在刺穿头的纵向延伸以响应于反作用力而缩回，因为当穿刺头前进通过身体通道的壁并且在释放反作用力时延伸。 在释放反作用力时延伸柱塞，以释放穿刺头以缩回。